View a plot of summary statistics after using irt_stan

Description

View a plot of summary statistics after using irt_stan

Usage

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stan_columns_plot(fit, stat = "Rhat", ...)

Arguments

fit

A stanfit-class object created by irt_stan or stan.

stat

A string for the statistic from the summary method for a stanfit object to plot. The default is "Rhat" but could, for example, be "mean" or "n_eff".

...

Additional options (such as pars or use_cache), passed to the summary method for a stanfit object. Not required.

Value

A ggplot object.

See Also

See stan_rhat, which provides a histogram of Rhat statistics.

Examples

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# Make a suitable data list:
spelling_list <- irt_data(response_matrix = spelling[, 2:5],
                          covariates = spelling[, "male", drop = FALSE],
                          formula = ~ 1 + male)

## Not run: 
# Fit a latent regression  2PL
twopl_fit <- irt_stan(spelling_list, model = "2pl_latent_reg.stan",
                      iter = 300, chains = 4)

# Get a plot showing Rhat statistics
rhat_columns(twopl_fit)

# Get a plot showing number of effective draws
rhat_columns(twopl_fit, stat = "n_eff")

## End(Not run)